A fast, easy to use, free, and community supported 2D game engine
dcthatch
Member
I have looked at the pages that i could find on google, but i have found nothing that i can use. What i want to do is to detect a pinch gesture and then zoom my TMXTiledMap. The problem is that i am already using scroll method when 2 touches occur and move. I would like to be able to keep this and use a pinch gesture to zoom. Are there any suggestions? Any help will be much appreciated
thanks
dcthatch
Member
thankyou, this is very useful and answers my question on how to scale it with the pinch.
The problem is that i do not know how to tell if the person is pinching (like holding the option key in the simulator), or dragging with 2 fingers (like holding option+shift in the simulator). Is there any way to do this.
bradparks
Member
and actually, i just checked my bookmarks again, and this opensource project:
http://code.google.com/p/imoves/
direct download:
http://imoves.googlecode.com/files/iMovesMaterials.zip
might be closer to what you want, as it's supposedly about how to recognize gestures using the accelerometer
A system utilizing the accelerometer on the iPhone to recognize gestures. The goal is to allow the visually impaired to operate the iPhone with gestures (proprioception instead of sight), and perhaps help regular people driving, etc. better use the device.
dcthatch
Member
i have done it using a function that i created. here is the code if anyone wants to know how to do it:
-(BOOL)isPinchingFirstPoints1:(CGPoint)p11 two:(CGPoint)p12 secondPoints1:(CGPoint)p21 two:(CGPoint)p22 {
CGPoint diff1 = ccpSub(p11, p21);
CGPoint diff2 = ccpSub(p12, p22);
if (diff1.x != diff2.x)
return YES;
else if (diff1.y != diff2.y)
return YES;
return NO;
}p11 is the first touch's location, p12 is the first touch's previous location, p21 is the second touch's location, and p22 is the second touch's previous location
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